Because it's Hacker News. Nothing gets reported here without half of this community being obnoxiously negative about it, as if we've all could have built something like LivingSocial if we wanted to.
Or, because, you know, the many, stated legitimate reasons people have? But yeah, why consider those when you can just pretend like an entire community is dumber you?
> "obnoxiously negative"..."as if we could have built anything like LivingSocial"
That's certainly implying that the negative posts are both un-constructive and omitting important & obvious context. That sounds a lot like "dumber" to me.